Rotary is a global organization of business and professional people that provides humanitarian service, promotes high ethical standards, and builds goodwill and peace worldwide. It operates through local clubs whose members abide by a 4-way test of the things they think, say, or do. Rotary focuses on community service, international and vocational service, youth programs, membership development, and club operations. At the core is The Rotary Foundation, one of the world's largest charitable organizations, which works to eradicate polio and support international humanitarian projects.